Recommendations for another POP3/IMAP/SMTP mail reader client?

Recommendations for another POP3/IMAP/SMTP mail reader client (if one
exists) other than Mozilla?

Years ago I hopped directly from Elm on a host server to graphic mail
clients on my desktop
box without ever dealing with, e.g., mutt & setting up sendmail. Now
Mozilla 1.7.2 crashes hard
on receiving a particularly noxious piece of spam I've been getting a
lot of and I'm ready to
deal with changing mail clients. I'm just hoping to get around this
without weeks of learning how
to configure sendmail for mutt ...